Automatic governor for internal-combustion engines



April 23, `1929.` R HUFFORD 1,710,311

AUTOMATIC GOVERNOR FOR INTERNAL COMBUS'I'ION ENGINES Filed Sept. l, 1926 INVENTOR ATTORNEY lllllmiii Patented Apr. 23, 1929. i 1,710,311 UNITED STATES PATENT OFFICE.

Application filed September 1, 1926. Serial No.-133,039.

This invention relates to automatic govercates with the atmosphere so that when a nors for internal combustion engines and vacuum exists in the intake line the atmosmore particularly to means for automatically pheric pressure will actuate the pistonrendering the governor inoperative under plunger ao automatically throttle the intake 5 certain conditions of use. line in accordance with' the load and speed Automatic governors, particularly of the of the engine. 50 type referred to in co-pending application The present invention proposes to cover and filed by me and Herman G. Adler under even seal the atmospheric intake end of the govdate herewith, Serial N o, 133,040, depend for ernor with a hood or cover 1, the same hav- 1.0 their operation upon the differential pressure ing attached thereto in an air-tight manner a occurring in the intake pipe line of the engine tube or pipe 2 which communicates at its 65 and the atmosphere.v Under certain operother end with an automatic valve device ating conditions when it becomes necessary to designated generally as C and forming a part shift into low or intermediate gears, it may of the attachment constituting the present inbecome desirable to discontinue the functionvention.

ing ofthe governor. Therefore, to meet that As will be observed from Figures 1 and 2 70 condition it is proposed to equip the governor the said attachment preferably includes in its with an attachment operated by any suitable organization a bracket 3 which may be conpart ofthe gear shifting mechanism and autonected as indicated at 4 to a suitable frame matically cut off communication with the atpart 5 of the vehicle chassis. One end of the mosphere so that the governor will be inoperbracket 3 is preferably enlarged as at 6 to pro- 75 ative when the vehicle operates in a gear or vide a hollow valve casing having a port 7 gears other than high gear. communicating with the atmosphere. The Accordingly, the present invention has prichamber provided by the hollow casing 6 is marily in View a novel, practical and readapted to receive a sliding valve member or liable device for automatically rendering the cut-olf 8 which is normally thrust outwardly 80 governor inoperative excepting when the veby a spring 9 confined between the bottom of hicle is moving under normal conditions unthe chamber and the bottom of the valve 8. der load, and in high gear. The said valve is provided with a stem 10 slid- While various expedients may be resorted ably guided in a cover or plug 11 through to to accomplish this object a practical emwhich it is adapted to project so that it may bodiment of the invention is shown in the be engaged by a part of the gear shifting accompanying drawings, in which: mechanism designated generally as S. In Figure 1 is a view illustrating more or less the embodiment shown the type of gear shift diagrammatically the arrangement employed includes a member which is adapted to shift and showing the attachment in detail as aphorizontally when moved by the operator of plied to a Ford car. the. vehicle thereby to permit the valve 8 to be Figure 2 is a top plan view of a portion of moved by the pressure of the spring 9 to the attachment shown in Figure 1, partly in close the port 7.

section to show the construction involved. The normal position of the gear shifting Similar reference characters designate cormeans 8 is shown in dotted lines in Fig. 1. 95

responding parts throughout the several fig- In that position the stem 10 of the valve is ures of the drawings. pressed inwardly to compress the spring and In the embodiment shown the automatic cause the body of the valve 8 to move out of governor device which is interposed in the obstructing relation to the port 7. It will intake pipe line of the engine is designated therefore be apparent that normally the hood generally as A. The construction of this de- 1 1s in communication with .the atmosphere v1ce is immaterial but for purposes of illusthrough the pipe line 2 since the chamber tration it may be pointed out that a governor within the casing 6 is also open to the atmosof the type shown in co-pending application phere. However, when the gearshifting tiled by me and Herman G. Adler, previously means is moved to the full line position referred to, has been diagrammatically shown shown 1n Fig. 1, the spring 9 will move the in Figure 1. This type of governor has a valve 8 so that the port? will be closed. The ported cover B which ordinarily communichamber of the hood 1 will therefore be cut moving olf from the atmosphere and the pistonplunger of the governor device A can not operate.

When using a low or intermediate gear of a transmission, it is necessary'for the engine to speed up and consequently the vacuum in the intake line is relatively great. Under that tendency the governor device would function to such a degree as to possibly hamper the motor in overcoming the inertia. of

the load. However, with the present attachment the governor is rendered inoperative when the vehicle is in low or intermediate gear so that no difficulty in starting the vehicle is experienced. When the vehicle is under way and moving in high gear, the automatic governor device will function in its normal way.

Without further description it is thought that the features and advantages of the invention will be readily apparent to those skilled in the art, and it will of course be understood that changes in the form, proportion and minor details of construction may be resorted to, without departing from the spirit of the invention and scope of the appended claims.

1. In an automatic suction responsive type governor device for internal combustion engines, the combination with the governing device normally open to the atmosphere and adapted to be moved by the difference of pressure between the vacuum in the intake pipe line and the atmosphere and a gear shifting part, of means actuated by said gear shifting part for cutting off atmospheric pressure from said automatic governing device to render the same inoperative,

' 2. In an automatlc suction responsive type governor device for internal combustion engines, the combination with the governing device normally open to the atmosphere and adapted to be moved by the difference of pressure between the vacuum in the intake pipe line and the atmosphere and a gear shifting part, of valve means actuated by the movement of said gear shifting part for cutting oi communication between the atmosphere and the governing device.

3. An attachment for automatic suction responsive type engine governors having an atmosphere port normall open to the atmosphere when the engine 1s operating, of auto matic means for closing said atmosphere port to render the governing device inoperative under certain predetermined conditions.

4. An attachment for automatic suction responsive 4type engine governors having an atmosphere port normally open to the atmosphere when the engine is operating, of means for closing said atmosphere port to render the governing device inoperative, said means being actuated by a gear shifting part of the vehicle.

5. An attachment for automatic suction responsive type engine governors having an atmosphere port normally open to the atmosphere when the engine is operating, of means for closing said atmosphere port to render the governin device inoperative, said means comprising a ood, a conduit connected to the hood, a valve member having an atmosphere port connected with said conduit, and means for operating said valve member.

6. An attachment for use in connection with internal combustion engine governors of the suction responsive type which control the speed of the engine by regulating the supply of mixture and are normally open to the atmosphere, comprising in combination with the governor, a hood adapted to be iitted to the air intake side of the overnor, a conduit connected to said hood, a racket, a valve device carried by the bracket and including an atmosphere port and a spring pressed plunger having a stem, and means for engaging said stem to actuate the plunger.

7. An attachment for use in connection with internal combustion engine governors of the suction responsive type which control the speed of the engine by regulating the supply of mixture and are normally open to the atmosphere, comprising in combination with the governor, a hood adapted to be fitted to the air intake side of the governor, conduit connected to said hood, a bracket, a valve device carried by the bracket and including an atmosphere port and a spring pressed plunger having a stem, and a gear shifting member for engaging the stem of the plunger.

In testimony whereof I hereunto aix my signature.

RAYMOND HUFFORD. 

